Churn.



T. J. CHENEY.

GHUBN.

(Application filed May 8, 1899.)

Patented Aug. 7, 900.

(No Model.)

Ilillllllllllillllll) TATES THOMAS J. CHENEY, OF CHICAGO, ILLINOIS,ASSIGNOR OF ONE-IIAIiF TO WVILLIAM R. TUCKER, OF SAME PLACE.

CHURN.

SPECIFICATION forming part of Letters Patent No. 655,391, dated August'7, 1900.

Application filed May 8, 1.899. a

T0 at whom it may conceive.-

Be it known that I, THOMAS J. CHENEY, of Chicago, in the State ofIllinois, have invented certain new and useful Improvements in Churns,of which the following is a specification.

This invention relates to that class of churns in which an agitator inthe churnreceptacle is connected with operating mechanism placed beneaththe receptacle by a shaft extended through its bottom for revolving theagitator. The advantages of this construction are that the operatingmechanism can be more compactly disposed of with relation to thereceptacle and the operatingshaft does not interfere with the use of anordinary cover on the top of thereceptacle. As ordinarily constructed apacking is used where the shaft passes through the bottom to preventleaking. This increases the friction on the shaft and is otherwiseobjectionable; and one of the objects of my improvement is to providemeans other than a packing in this class of devices for preventingleaking where the shaft passes through the bottom of the receptacle.

The invention also relates to the class of churns in which a combinedagitator and aerator is used; and a further object of myimprovement isto provide an improved agitator and aerator with a view of efiectingproportionally-less agitationby the movementv of the agitator andgreater aeration and distribution of the air introduced into the liquidby the agitator and in this way to secure equally as good or betterresults with much less expenditure of power.

I attainthese objects by the means illustrated in the accompanyingdrawings, in which Figure l is a central vertical section of a churn ofthe class mentioned provided with my improvements. Fig. 2 is a top view,the cover being removed. Fig. 3 is a detail showing in enlarged sideelevation a connecting cap-piece of the tubular shaft of the agitator.Fig. at is a detail showing an end view of a detached part. i I

In the drawings, A is a base piece provided with radial extensions A,having sockets for legs A for supporting the base above the Serial No.715,910. a. model.)

floor. This piece has a vertical extension a at one side, to the upperend of which the drive wheel B is pivoted and in the lower end of whichis journaled a shaft B, connected by a gear I) with the drive-wheel. Theshaft B is also journaled in a vertical piece a, depending from thebottom of the base-piece, and provided with a miter-gear b, engaging agear 12 of the operating-shaft C, journaled in a central dependingtubular extension a of the base-piece.

D is the churn-receptacle, rested upon the base or secured thereto bybolts d. The bottom of the receptacle is provided with a centralperforation d for admitting the shaft C, and this perforation issurrounded by the bore of a stationary tube E, secured to the bottom ofthe receptacle by means of a liquid-tight joint, so as to prevent anyescape of liquid from the receptacle into the tube. Said tube isextended from the bottom up to top of the receptacle above the level ofany liquid which it is intended to contain. The shaft C isextended'throu'gh the stationary tube E and provided with a head 0 orenlargement which Will restupon the top end of thetube and support theshaft in the tube. The upper end 0 of the shaft is square. F is a'larger rotatable tube, the lower end f of whichis fitted to revolve uponthe stationary tube E and the upper'end of which is connected with thesquare end a of the operating-shaft C by tral opening to fit the squareend of the operating-shaft and slots f for engaging pins f on therotatable tube, so as to cause said tube to revolve with said shaft. Theslots f have lateral or horizontal extensions at the top, whereby thecap can be turned slightly on the rotatable tube, so as to cause thepins to enter the horizontal portion of the slot, and thereby supportthe weight of the tube suspended on the cap-piece and prevent itsdropping down upon the bottom of-the receptacle. Near the lower end ofrotatable tube F are several openings 6, and around each of these issecured to said tube thesinaller open end e of a flattened flaring tubeG. The several tubes G radiate from the rotatable tube F, with theirlarger ends opened, and are placed edge to edge in a plane perpendicularto the axis of means of a cap-piece F, having a square cenrotation, sothat in rotation they follow each other, and the sharp edges cut throughthe liquid in the receptacle near the bottom with much less friction orresistance than would be the .'case if broader areas were pushed squareagainst the liquid. Both the interior and the exterior of theseflattenedtubes are smooth and even from end to end and open at bothends, so as to present as little resistance as possible to the movementof the liquid upon and through them. \Vhen submerged and not in action,the liquid fills them and ex tends up in the rotatable tube F to itslevel in the receptacle; but when in rotation centrifugal action causesthe liquid in the rotatable tube F and the tubes G to be thrown out anddisplaced by air drawn down through said tube F. The increment of volumeoutwardly in the radiating outwardlyflaring tubes aids centrifugalaction and so produces an increase of downdraft in the rotatable tube Fover what non-flaring tubes similarly arranged would produce, and theair thus taken in passes out through horrizontally-wide andvertically-narrow exits at the ends of the flattened tubes G and isthereby more widely distributed throughout the liquid at the bottom thanheretofore.

This form of agitator and aerator as compared with former forms producesin the liquid less agitation through the agency of the dasher movementand greater agitation through the agency of the introduced air. It,therefore, can be operated with less power than previous devices of thisclass. Another advantage which it possesses over prior construction isthat it can be operated in either direction with equal facility andeffect.

The circular motion of the liquid in the receptacle is retarded bynarrow perforated plates H, supported against the wall of the receptacleby wire rings 72, adapted to fit within the receptacle and hold theplates with one edge against the wall of the receptacle.

What I claim is- 1. In a churn of the class mentioned the combinationwith a receptacle for containing the liquid provided with acentralperforation in the bottom, of a stationary tube secured with one endover the perforation by a liquid-tight connection with the bottom andextended up in the receptacle above the space for containing the liquid,the operatingshaft extended through the bore and projecting above theopen end of the stationary tube and provided with means for supportingit vertically therein, a rotatable tube mounted on the stationary tubeand connected with the projecting upper end of the ing-shaft extendedthrough the base and projecting above the open end of the stationarytube and provided with means for supporting it vertically therein, atube rotatably mounted on the stationary tube with intervening air-spaceand rigidly connected with the projecting upper end of theoperatingshafts so as to rotate therewith, a series of open-endedflaring tubes radially mounted upon the rotatable tube near the bottomin aplane perpendicular to the axis of rotation, the small ends of saidflaring tubes being connected so as to communicatewith the bore of therotatable tube and the larger ends being flattened so as to straightenthe upper and lower sides of said flaring tubes and form an acute ovateopening and exterior therefor, and mechanism for operating saidrotatable tube as specified.

THOMAS J. CHENEY. YVitnesses:

ANNIE M. ADAMS, ROBERT VAN SANDS.

